Furrow-staff for millstones



U. H. PALMER.

v Purrow Stafffor Millstones.

Patented July 20,1880.

4 INVENTOR:

WITNESSES ATTORNEYS.

NPEIERS, PHOTO-LITHOGRAPHER, WASHINGTON, D. C.

UNITE STATES PATENT OFFICE.

URA H. PALMER, OF GREEN SPRING, OHIO.

FURROW-STAFF F OR MILLSTONES.

SPECIFICATION forming part of Letters Patent No. 230,331, dated July 20,1880.

Application filed February 17, 1880.

' the furrows of a millstone-dress may be brought to a perfect gage, and which shall be simple in construction and convenient in use.

The invention consists in constructing a furrow-staff of two frames open at bottom and having base bars, the adjusting bars, and hand-screws, the slotted bars and bolts, the slide, the staff having hinged foot, the handwheel, and the gage, and jam-nuts, as will be hereinafter fully described.

Similar letters of reference indicate corresponding parts.

A are two vertical rectangular frames, open at their lower ends and having outwardlyprojecting bars B attached to the lower ends of their side bars, to rest upon the face of the millstone and support the frames A in erect positions. To the inner parts of the bars B are attached keepers O, to receive the ends of the bars D that connect the said frames A B. The bars D are secured in place adjustably by hand-screws E, which pass through the said keepers (l and rest against the said bars D, so that the frames A B can be adjusted at such a distance apart as the size of the millstone may require. F are bars which are slotted longitudinally to receive the bolts G, so that the said bars F can be adjusted as the adj ustment of the bars D may require. The bolts G also pass through vertical slots in the side bars of the frames A, so that the bars F may be adjusted as the desired inclination of the furrows from the skirt to the eye of the millstone and the desired depth of the said furrows may require. a

The bars F are designed to serve as ways for the slide H, the side edges of which are rabbeted to receive and fit upon the upper edges of the said bars F.

screw-hole, to fit against the flattened side of p the lug J, formed upon the foot K, and which has a hole formed through it to receive the screw L.

By this construction, by loosening the screw L the foot K may be adjusted to correspond with the desired lateral inclination of the furrow, where it will be secured in position by again tightening the screw L.

Upon the upper part of the staff I is formed a screw-thread which fits into the screw-thread formed in the hub of the hand-wheel M, so that the staff I and its foot K may be raised and lowered. by turning the said hand-wheel M. The hand-wheel M rests upon the slide H, and thus supports the staff I and its foot K.

The downward movement of the'staif I is limited by a nut, N, placed upon its upper part above the hand-wheel M, and which is kept from being turned by contact with the said hand-Wheel by ajam-nut, O, screwed upon the staff I above the gage-nut N.

In using the machine, the frames A B are adjusted upon the bars D F, according to the size of the millstone to be dressed. The bars F are adjusted to thedesired longitudinal inclination of the furrows, and the foot K is adjusted to the desired lateral inclination. The nutNis adjusted according to the required depth of the furrow, and is secured by the j amnut O. The staff I is then raised and the machine is ready for use.

In applying the machine the face of the foot I is painted, the machine is placed over the furrow, and the staff I is lowered to bring the foot K into contact with the furrow, so that the paint may show if the bottom of the furrow is uneven and the gage-nut N may show if the furrow has been cut to the desired depth.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with the frames A B,

the bars F and staff I, having foot'K, of the slide H, the hand-wheel M, the gage-nut N, and the jam-nut O, substantially as herein shown and described, whereby the furrow may be gaged, as set forth.

URA HENRY PALMER.

Witnesses:

JAS. F. ROBINSON, J. L. MANKER. 

